Ex Libris has announced an Open Platform Strategy. As part of this approach they will supply well-documented âOpen-APIsâ and Web services. They have also created EL Commons, a collaborative Web-based platform that includes a Developer Zone and a code-sharing platform for customers. OCLC also has an Open-API approach with the WorldCat Grid. This presentation will investigate what this Open-API strategy means for customers and why (or why not) libraries should support this âopenâ-proprietary strategy. -- Edward M. Corrado, Binghamton University